Mammoth Uncensored Word List:
49 words ending with rm, 11 letters long

acinaciform antenniform asbestiform bacilliform cabbageworm calcariform campaniform cerebriform colubriform coraciiform coralliform corolliform crateriform diversiform dolabriform electroform falconiform geoisotherm granitiform granuliform herpatiform homoiotherm insectiform isogeotherm lamelliform lapilliform mamilliform mesectoderm naupliiform ostracoderm panduriform papilliform patelliform planuliform retransform rhagadiform sacculiform sagittiform scalariform scalpriform scoleciform spiraliform stipitiform subreniform trapeziform tympaniform vasculiform verruciform zeolitiform